Carlisle Ultimax 3 has evolved into Ultimax PRO. Thicker cross section so more surface area is in contact with clutch. New cog design dissipates heat and aids flexibility Runs cooler for better performance. Run cool, run long & run fast with Ultimax PROAdditonal Fitment:2009-2011 ARCTIC CAT F5 LXR2009-2009 ARCTIC CAT F5 2009-2009 ARCTIC CAT T5002009-2011 ARCTIC CAT BEARCAT 5702009-2011 ARCTIC CAT F570 2009-2011 ARCTIC CAT T570